Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Microstructure of laser metal deposited duplex stainless steel: Influence of shielding gas and heat treatment
University West, Department of Engineering Science, Division of Welding Technology. (PTW)ORCID iD: 0000-0003-3374-6282
University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing. (PTW)
Alfa Laval Tumba AB, Tumba .
University West, Department of Engineering Science, Division of Welding Technology. ITW Welding AB, Partille . (PTW)ORCID iD: 0000-0003-4978-390X
Show others and affiliations
2021 (English)In: Welding in the World, ISSN 0043-2288, E-ISSN 1878-6669, Vol. 65, p. 525-541Article in journal (Refereed) Published
Abstract [en]

This research work is the first step in evaluating the feasibility of producing industrial components by using Laser Metal Deposition with duplex stainless steel Wire (LMDw). The influence of Ar and N2 shielding gases was investigated in terms of nitrogen loss and in the microstructure and austenite content of different deposited geometries. The evolution of the microstructure in the build-up direction of the Ar and N2-shielded blocks was compared in the heat-treated and as-deposited conditions. The susceptibility for oxygen pick-up in the LMDw deposits was also analyzed, and oxygen was found to be in the range of conventional gas-shielded weldments. Nitrogen loss occurred when Ar-shielding was used; however, the use of N2-shielding prevented nitrogen loss. Austenite content was nearly doubled by using N2-shielding instead of Ar-shielding. The heat treatment resulted in an increase of the austenite content and of the homogeneity in the microstructure regardless of the shielding gas used. The similarity in microstructure and the low spread in the phase balance for the as-deposited geometries is a sign of having achieved a stable and consistent LMDw process in order to proceed with the build-up of more complex geometries closer to industrial full-size components.

Place, publisher, year, edition, pages
Springer, 2021. Vol. 65, p. 525-541
Keywords [en]
Duplex stainless steels, Additive manufacturing, Laser metal deposition, Directed energy deposition, Laser beam additive manufacturing
National Category
Manufacturing, Surface and Joining Technology Metallurgy and Metallic Materials
Research subject
Production Technology
Identifiers
URN: urn:nbn:se:hv:diva-16106DOI: 10.1007/s40194-020-01036-5ISI: 000598987700002Scopus ID: 2-s2.0-85097168175OAI: oai:DiVA.org:hv-16106DiVA, id: diva2:1508388
Funder
Knowledge Foundation, 20170060Available from: 2020-12-10 Created: 2020-12-10 Last updated: 2021-03-10Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textScopus

Authority records

Valiente Bermejo, María AsunciónThalavai Pandian, KarthikeyanHarati, EbrahimKisielewicz, AgnieszkaKarlsson, Leif

Search in DiVA

By author/editor
Valiente Bermejo, María AsunciónThalavai Pandian, KarthikeyanHarati, EbrahimKisielewicz, AgnieszkaKarlsson, Leif
By organisation
Division of Welding TechnologyDivision of Subtractive and Additive ManufacturingDivision of Production Systems
In the same journal
Welding in the World
Manufacturing, Surface and Joining TechnologyMetallurgy and Metallic Materials

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 314 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf